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Smooth Operator Keratin Treatment Refill

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Smooth Operator Keratin Treatment Refill
Smooth Operator Keratin Treatment Refill
Smooth Operator Keratin Treatment Refill
Smooth Operator Keratin Treatment Refill

Smooth Operator Keratin Treatment Refill

Next. Level. Smoothing.

You asked, we listened…your Keratin Treatment refill is here! Don’t waste your leftover Squeaky Clean Priming Shampoo, grab a new bottle of Smooth Operator Keratin Treatment Spray for your next at-home keratin treatment. Go off and create even more #HairGoals moments!  

  • Smooth frizz
  • Nourish & moisturize
  • Help to strengthen & prevent breakage
  • Improve the appearance of split ends
  • Reveal silky, reflective shine
  • Cut blow-dry time by up to 30%


*This item is the Keratin Treatment Spray only. It does not include any other items from our At-home Keratin Treatment Kit. Please refer to your previously purchased Kit’s instruction card for usage directions, or refer to the HOW TO directions HERE on our website. This item is only eligible for replacements if damaged in transit; no refunds available for this item.

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A full bottle of Smooth Operator Keratin Treatment to use with your existing Squeaky Clean Priming Shampoo.

Enjoy weeks of frizz-free hair, now shinier, healthier, and more manageable than before. Unlike many in-salon keratin treatments, Gussi ditches the formaldehyde and all other nasty chemicals. Fabulously sleek hair that lasts, all from the comfort of your own bathroom.

For all hair types. Results may vary slightly based on hair texture, coarseness, porosity, and overall hair condition.

Color-safe. For best results, Gussi up prior to coloring hair. You can color your hair immediately after completing the Gussi treatment. If you recently colored your hair, wait at least five washes before applying Gussi's formaldehyde free treatment.

Keep those curls - if you want! Gussi won’t break the bonds of your hair, so your natural texture remains – just with a smoother, more manageable, elongated pattern for the duration of the treatment.You must flat iron hair as the final step to lock in the treatment, but you can then immediately rinse to get those gorg curls back.

Made in USA.

How To Use
  1. Wash 2x with the Squeaky Clean Priming Shampoo you already have to clarify and prep your hair. If you have very dry or damaged hair, just 1 wash will do it.

  2. Apply Smooth Operator Keratin Treatment, comb thru and let process for ~20-30 minutes.

  3. Rinse your hair with water and towel dry.

  4. Blow dry smooth until hair is completely dry.

  5. Flat iron hair in small sections to activate the frizz-fighting power.

Style however you like! Immediately following your DIY keratin treatment, you’re free to wash, color, heat style, curl your hair and even work out – whatever you and your hair desire.  

For more detailed instructions, reference the HOW TO page.

Smooth Operator Keratin Treatment
73.9ml / 2.5 fl oz

Water (Aqua) (Eau), Glyoxyloyl Keratin Amino Acids, Glyoxyloyl Carbocysteine, PEG-40 Hydrogenated Castor Oil, Dipropylene Glycol, Aloe Barbadensis Leaf Juice*, PEG-12 Dimethicone, Silicone Quaternium-18, Glycerin, Soytrimonium Chloride, Silicone Quaternium-8, Decyl Glucoside, Tocopherol, Niacinamide, Pisum Sativum (Pea) Extract, Salvia Hispanica Seed Extract, Ricinus Communis (Castor) Seed Oil, Prunus Armeniaca (Apricot) Kernel Oil, Hydrolyzed Pea Protein, Hydrolyzed Vegetable Protein, Moringa Oleifera Seed Oil, Pelvetia Canaliculata Extract, Cocos Nucifera (Coconut) Oil, Simmondsia Chinensis (Jojoba) Seed Oil, Rosa Canina Seed Oil, Caprylyl Glycol, Guar Hydroxypropyltrimonium Chloride, Xylitol, Anhydroxylitol, Xylitylglucoside, Maltitol, Polysilicone-29, Trideceth-6, Trideceth-10, Trideceth-12, Cetrimonium Chloride, Hexylene Glycol, Propylene Glycol, C13-15 Alkane, Phytic Acid, Phenoxyethanol, Ethylhexylglycerin, Sorbic Acid, Potassium Sorbate, Sodium Benzoate, Citric Acid, Fragrance (Parfum), Hexyl Cinnamal, Limonene

* Certified organic ingredient/Ingrédient certifié biologique

Add Mane Squeeze™ for all your straightening, smoothing & styling needs!

1" Titanium & Ceramic Flat Iron



Customer Reviews

Based on 12 reviews

Great my hair soft. I love it! Depending on how long the product last in my hair. I will buy it again.

Hi Merceded!

Thanks so much for taking the time to leave us a 5-star rating – it’s much appreciated!

Margaret Lesniewski
Disappointing. Don't waste your money on this product.

I usually opt for salon keratin treatments to tame my color-treated, frizzy hair, but decided to try Gussi for comparison. I'm very disappointed. The frizz was controlled for about a week (misleading, given that Gussi advertises that it controls frizz for "up to 6 weeks"), the process lightened my hair so much that it needed to be recolored, the texture of my hair became like straw, and my hair still emits the disgusting smell of the product a week and a half after use. I have had much better results using anti-frizz products from the drugstore. I won't be a returning customer.

Hi Margaret,
To get the best results you will need to use our Priming Shampoo first. It is created to work synergistically with the treatment. Our Treatment Refill is for recurring customers who have priming shampoo left and don’t want to go to waste. This was your only Gussi purchase. Please reach out to our team at if you have any other questions. Thank you for your feedback!


Didn’t like at all! Made my hair look like straw….

Rhonda C.
Works good

Works good

Hi Rhonda,

Thanks for sharing! Our number 1 goal is to make our customers happy and confident with their hair.

Priyanka G.
Love my results!

So far so good, loving the sleek hair, haven't washed yet so will update once i have!

Hi Priyanka,
We're so glad you are loving your Gussi experience! Your hair looks gorgeous and silky-smooth!

No nasties,
only the good stuff

At Gussi, we are equally committed to great hair and great health. Yes, we deliver shiny, smooth, frizz-free hair. Does it mean you need to be exposed to nasty chemicals found in pretty much every smoothing product out there? Hard pass.
We offer non-toxic keratin treatment products developed with your safety in mind. Better for your hair, better for the environment, better for everyone.

Keratin Amino Acids
  • Add strength & resistance
  • Improve appearance of split ends & surface damage
  • Boost hair cuticle condition
Hydrogenated Castor Oil
  • Imparts reflective shine
  • Smooths hair fiber
  • Seals damaged cuticles
Moringa Oleifera (Moringa) Seed Oil
  • Helps to moisturize
  • Improves manageability
  • Provides nourishment
  • Anti-microbial
Vitamins C, B3, B5, B6, E
  • Antioxidants help to revitalize & protect hair
  • Reduce scalp inflammation
PETA & Leaping Bunny certified cruelty-free

How to #gussiUP

Get that playlist ready and get ready for some seriously smooth self-care. FIVE EASY STEPS, in about an hour from start to finish, for up to six weeks of shiny, silky, healthy hair. Once you’ve gussied up, might we suggest sharing a few selfies?

What you’ll need
Squeaky Clean™ Priming Shampoo
Hair Clips
Plastic Comb
Blow Dryer
Flat Iron


What is keratin and is keratin good for hair?

Keratin is a protein naturally made in the body that makes up your hair, skin, and nails - so yes, keratin is great for your hair! Our formaldehyde free keratin treatment adds an extra powerful dose of non-toxic keratin that will help your hair become softer, smoother, and less prone to frizz. Our At-Home Keratin Treatment works great with all hair types and lasts up to six weeks from just one treatment!

Is keratin good for hair with low porosity, high porosity or normal hair types?

Simple answer, all of the above! Keratin is great for all hair types, however sometimes one’s hair type isn’t able to properly absorb the protein to be able to gain the best results. Our at-home keratin treatment uses hydrolyzed keratin which is a broken down version of the larger protein, allowing for even hair with low porosity to reap the benefits. Hydrolyzed keratin works wonders even if you have damaged hair, since the hydrolyzed keratin would fill in the gaps in the hair strands that have been weakened over time. Gussi is also NOT a chemical straightener or relaxer, so it won’t disturb any of your natural curl patterns. This is just another example of how Gussi has the best keratin treatment kit.

Is it easy to do a keratin treatment at home?

We have made it extremely easy! Salon keratin treatments are often expensive, have a long processing time and use products that do more harm than good. Salon keratin treatments usually involve the use of formaldehyde, which leads to a range of negative side effects on your hair and health as stated by the FDA. This is why we developed the best formaldehyde-free formula so that you can do your keratin treatment at home with peace of mind that you and your hair are in good hands. To complete our powerful frizz-fighting treatment, you only need an hour of your time and some home essentials like a towel, hair clips, plastic comb, brush, blow dryer, and flat iron. It’s five simple steps to six weeks of great hair, all from just one treatment!